Purdue University - Extension - Forestry and Natural Resources
In this episode of A Moment in the Wild, wildlife technician Zach Truelock introduces you to the southern two-lined salamander, a member of the lungless salamander family, which true to their name do nearly all of their respiration through their skin.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Salamanders of Indiana Book, The Education Store, Purdue Extension resource center
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbender ID, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Moment in the Wild, Playlist, Purdue Extension – FNR YouTube Channel
Help the Hellbender, YouTube Playlist & Website
Zach Truelock, Hellbender Technician
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
Dr. Rod Williams‘ hellbender research, the Purdue rearing lab and more than 12 years of the lab’s work are featured in a new documentary, Hellbender in the Blue,
produced by Teardrop Pictures.
The film premiered on January 12 at the Kan-Kan Cinema and Brasserie in Indianapolis and is now available to purchase and stream through Vimeo on Demand. Hellbender in the Blue is also heading out on the festival tour, including the Indiana Humanities Waterways Film Tour.
The Indiana Humanities Waterways Film Tour is a nine-city tour featuring six short documentary films about Indiana’s waterways. The films feature stories told by individuals from across the state and highlight their diverse relationships with water. Screenings are free and open to the public, although advance registration is requested. Select events will also include a panel featuring the filmmakers prior to the screening.
The soundtrack to Hellbender in the Blue is available on Spotify, care of Eric Salazar, also known as @theclarinetguy on Instagram.
Purdue Forestry and Natural Resources’ involvement in the Hellbender in the Blue project began in April 2020, when Katelyn Calhoun, a documentary film maker with Teardrop Pictures, contacted Williams and research biologist/extension wildlife specialist Nick Burgmeier, regarding her desire to make a film about hellbenders in Indiana, as well the efforts Purdue, The Nature Conservancy and others have undertaken to protect/restore their populations and the efforts to remove dams from their habitat. The eventual goal is to make a more wide-ranging documentary about hellbenders throughout their range.
“We hope the film helps reach a broader audience to expand awareness of the project and encourages people to support efforts to protect hellbenders and Indiana’s water resources,” Burgmeier said.
Resources:
A Moment in the Wild, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
Improving Water Quality by Protecting Sinkholes on Your Property, Video, Purdue Extension – FNR YouTube Channel
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Is it a Hellbender or a Mudpuppy?, Got Nature? Blog
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
Help the Hellbender, Playlist & Website
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbenders Rock!, The Education Store
Help the Hellbender, North America’s Giant Salamander, The Education Store
Wendy Mayer, FNR Communications Coordinator
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
Nick Burgmeier, Research Biologist and Wildlife Extension Specialist
Purdue Department of Forestry and Natural Resources
In this episode of A Moment in the Wild, wildlife technician Zach Truelock introduces you to the streamside salamander. This salamander lives in underground burrows and lays its eggs in small headwater streams in the winter/early spring. This species also has a twin species in Indiana, the small-mouthed salamander.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Salamanders of Indiana Book, The Education Store, Purdue Extension resource center
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbender ID, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Moment in the Wild, Playlist, Purdue Extension – FNR YouTube Channel
Help the Hellbender, YouTube Playlist & Website
Zach Truelock, Hellbender Technician
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
In this episode of A Moment in the Wild, wildlife technician Zach Truelock introduces you to another member of the lungless salamander family, the cave salamander. This species, identifiable by its bright orange/red coloration covered in black spots, lives in caves as well as crevices along streams, rocky bluffs and springs.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Salamanders of Indiana Book, The Education Store, Purdue Extension resource center
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbender ID, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Moment in the Wild, Playlist, Purdue Extension – FNR YouTube Channel
Help the Hellbender, YouTube Playlist & Website
Zach Truelock, Hellbender Technician
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
In this edition of A Moment in the Wild, meet one of our early spring breeding species of frogs, the wood frog. This species may vary in color from tan and browns to reds and pinks, but is identifiable by a black mask which runs through the eye to the upper jaw. Wood frogs also have the unique ability to freeze solid, even stopping their heart beat and blood flow during the winter months.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
Sounds of Frogs & Toads, Purdue Extension – Forestry and Natural Resources (FNR)
Frogs & toads of Indiana, The Education Store, Purdue Extension resource center
Salamanders of Indiana Book, The Education Store
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store
Hellbender ID, Playlist, Purdue Extension – FNR YouTube Channel
A Moment in the Wild, Playlist, Purdue Extension – FNR YouTube Channel
Zach Truelock, Hellbender Technician
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
In this HEE Prescribed Fire video, Charlotte Owings, project coordinator on the Hardwood Ecosystem Experiment (HEE) explains the forest management technique of prescribed fire and how it is being utilized on the HEE.
What is HEE?
The focus of forest science is increasingly shifting to the management of forests as complex systems rather than as simple agricultural landscapes—with a much greater appreciation for the interactive ecosystem processes. In addition, now for many forest landowners, the ecological value of their land is at least as important as the economic return. It is, therefore, vital to understand how forest management affects not only timber production, but also the overall function of forested ecosystems.
The Hardwood Ecosystem Experiment (HEE) is a long-term, large-scale experimental study of forest management and its impacts. The project was initiated in 2006 with partners including: Ball State University, Drake University, Indiana State University, Purdue Entomology, Indiana Department of Natural Resources (IN DNR), and the Indiana Chapter of the Ruffed Grouse Society.
For information about study sites, harvesting treatments, sampling design, and more, see our Project Overview and Design page and US Forest Service General Technical Report NRS-P-108, The Hardwood Ecosystem Experiment: A Framework For Studying Responses to Forest Management.
Resources
Hardwood Ecosystem Experiment, Website
Hardwood Ecosystem Experiment (HEE), YouTube Playlist, Purdue Extension–Forestry and Natural Resources (FNR)
Ask an Expert: Hardwood Ecosystem Experiment (HEE) Birds and Salamander Research, Video, Purdue Extension-FNR YouTube Channel
Hardwood Ecosystem Experiment – Wildlife Responses to Timber Harvesting, The Education Store, Purdue Extension’s resource center
The Hardwood Ecosystem Experiment: Indiana Forestry and Wildlife, The Education Store
Charlotte Owings, Hardwood Ecosystem Experiment Project Coordinator
Purdue University, Department of Forestry and Natural Resources
In this episode of A Moment in the Wild, wildlife technician Zach Truelock introduces you to the Jefferson salamander, a species which lives in underground burrows and lays its eggs during the winter.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
I found this in my barn. Is it a Hellbender?, Purdue Extension
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Is it a Hellbender or a Mudpuppy?, Got Nature? Blog
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
A Moment in the Wild, Playlist, Purdue Extension – Forestry and Natural Resources
Help the Hellbender, Playlist & Website
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbenders Rock!, The Education Store
Help the Hellbender, North America’s Giant Salamander, The Education Store
Zach Truelock, Hellbender Technician
Purdue Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources
The effects of planting or harvesting a tree often takes time to see. What are the long-term effects on the forest ecosystem as a whole, and also on individual species within it?
A new research publication “Response of Terrestrial Salamanders to the Decade Following Timber Harvest in Hardwood Forests” by graduate research assistant/PhD candidate Alison Ochs along with associate professor of ecology and natural resources Mike Saunders and professor of wildlife science Rob Swihart examined an 11-year span at the Hardwood Ecosystem Experiment to answer that question.
Why study salamander abundance? Salamanders, especially terrestrial salamanders such as

plethodontidae, are critical components of forest ecosystems and potential indicators of ecosystem changes due to their broad range, high densities and sensitivity to ecosystem changes. Salamanders rely on cool, moist conditions, which can be affected by the change in available leaf litter and coarse woody debris, as well as canopy cover.
Methods
The Hardwood Ecosystem Experiment is a long-term, large-scale experimental study of forest management and its impact, which began in 2006. The 100-year project aims to find the ecological and social impacts of long-term forest management on public and private lands in Indiana and the Central Hardwood Region. The HEE features nine units located across the Morgan-Monroe and Yellowwood State Forests, which were analyzed prior to timber harvesting and the years following timber harvests. Units were assigned to utilize even-aged management, uneven aged management or as unharvested controls.
“With salamanders and other amphibians on the decline, understanding how timber harvest affects these vulnerable species is critical,” Ochs said. “Our findings suggest that timber harvesting techniques that keep some canopy cover may help prevent salamander declines, and even help protect them from drought, a concern as such extreme weather events are growing more common. These findings may be useful to land managers who hope to conduct timber management sustainably without damaging delicate ecosystems and species. Land managers particularly concerned about salamander populations may consider using methods such as shelterwood harvesting rather than more impactful clearcutting.”
Data was collected using artificial cover object grids beginning in the fall of 2007 to determine relative salamander abundance. The first harvests occurred in the winter of 2008. Data was collected in the fall (from mid-September to mid-November) and the spring (from the beginning of March to the end of April) each year through November 2014. Sampling then took place from the fall of 2015 through the spring of 2017 and paused, before resuming in March 2019.
Researchers utilized R for statistical computing and used a before-after-control-impact (BACI) design to examine the effects of harvest type on salamander captures with generalized linear mixed effects models.
Resources:
Hardwood Ecosystem Experiment (HEE), Playlist, Purdue Extension – Forestry and Natural Resources
Hardwood Ecosystem Experiment, Website
Hardwood Ecosystem Experiment – Wildlife Responses to Timber Harvesting, The Education Store, Purdue Extension – Forestry and Natural Resources
The Hardwood Ecosystem Experiment: Indiana Forestry and Wildlife, The Education Store
A Moment in the Wild, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
Improving Water Quality by Protecting Sinkholes on Your Property, Video, Purdue Extension – FNR YouTube Channel
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Is it a Hellbender or a Mudpuppy?, Got Nature? Blog
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
Wendy Mayer, Communications Coordinator
Purdue University Department of Forestry and Natural Resources
In this edition of ID That Tree, meet another member of the hickory family that can found in upland areas, the pignut hickory. This species is identifiable by its five-leaflet compound leaves, its smooth round nut and partially open husk.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources:
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Woodland Management Moment, Playlist, Purdue Extension – FNR YouTube Channel
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store, Purdue Extension Resource Center
Native Trees of the Midwest, The Education Store
Investing in Indiana Woodlands, The Education Store
Forest Improvement Handbook, The Education Store
Pignut Hickory, Native Trees of Indiana River Walk, Purdue Fort Wayne
Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources
In this edition of A Moment in the Wild, Zach Truelock introduces you to the spotted salamander, which is easily identifiable by the two rows of spots on its back. Learn more about their lives and breeding methods inside.
If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning, or other natural resource topics, feel free to contact us by using our Ask an Expert web page.
Resources
Question: Which salamander is this?, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Salamanders of Indiana Book, The Education Store, Purdue Extension resource center
Amphibians: Frogs, Toads, and Salamanders, Purdue Nature of Teaching
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store, Purdue Extension resource center
Hellbender ID, Playlist, Purdue Extension – Forestry and Natural Resources YouTube Channel
A Moment in the Wild, Playlist, Purdue Extension – FNR YouTube Channel
Help the Hellbender, YouTube Playlist & Website
Zach Truelock, Hellbender Technician
Purdue University Department of Forestry and Natural Resources
Rod Williams, Assistant Provost for Engagement/Professor of Wildlife Science
Purdue University Department of Forestry and Natural Resources